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Re: Sparc ASAN
From: Konstantin Serebryany <konstantin.s.serebryany@gmail.com>
Date: Mon, 3 Dec 2012 22:33:12 +0400
> On Mon, Dec 3, 2012 at 10:29 PM, David Miller <davem@davemloft.net> wrote:
>> We could also add a __sparc__ block to sanitizer_stacktrace.cc:patch_pc().
>> The Sparc PC is actually 8 bytes after the caller's jump. Sparc has
>> a delay slot, the place to return to is 2 instructions after the call/jump,
>> and instructions are all 4 bytes long.
>
> Like this?
>
> --- sanitizer_common/sanitizer_stacktrace.cc (revision 169136)
> +++ sanitizer_common/sanitizer_stacktrace.cc (working copy)
> @@ -36,6 +36,8 @@
> #if defined(__powerpc__) || defined(__powerpc64__)
> // PCs are always 4 byte aligned.
> return pc - 4;
> +#elif defined(__sparc__)
> + return pc - 8;
> #else
> return pc - 1;
> #endif
>
Perfect.